Each ramen packet has about 400 calories, add in a few vegetables and a little meat and you've got a 500-600 calorie meal. Nothing in instant ramen is inherently bad for you (unless you have high blood pressure and are sensitive to sodium intake--and even then, just eat less of the seasoning).
Sure living off of nothing but instant ramen isn't great, but neither is living off of nothing but broccoli.
Sure living off of nothing but instant ramen isn't great, but neither is living off of nothing but broccoli.